SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for so-fa.ca
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- webmail.so-fa.ca
- Valid from
- Aug 6, 2026
- Valid until
- Nov 4, 2026 (63 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06ECDAB60C10765A6932A357491D1930FFE9
- SHA-256 fingerprint
- 53:B7:C6:95:4B:91:D6:CA:1E:3B:BB:BA:1A:71:07:C6:5E:9C:79:F6:B1:E5:D7:5F:85:9C:A1:53:12:3B:7D:82
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Aug 10, 2026.
Never get surprised by so-fa.ca's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch so-fa.ca continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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